package com.sxt.jwt;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

/***************
 * token验证拦截
 * @author bamboo zjcjava@163.com
 * @time 2017-08-01
 */
@Component
//@WebFilter(urlPatterns = { "/api/v/*" }, filterName = "tokenAuthorFilter")//注解配置filter
public class TokenAuthorFilter implements Filter {

    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse rep = (HttpServletResponse) response;

        //设置允许跨域的配置
        // 这里填写你允许进行跨域的主机ip（正式上线时可以动态配置具体允许的域名和IP）
        rep.setHeader("Access-Control-Allow-Origin", "*");
        // 允许的访问方法
        rep.setHeader("Access-Control-Allow-Methods","POST, GET, PUT, OPTIONS, DELETE, PATCH");
        // Access-Control-Max-Age 用于 CORS 相关配置的缓存
        rep.setHeader("Access-Control-Max-Age", "3600");
        rep.setHeader("Access-Control-Allow-Headers","token,Origin, X-Requested-With, Content-Type, Accept");


        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json; charset=utf-8");
        
        
        String token = req.getHeader("token");//header方式
//        ResultInfo resultInfo = new ResultInfo();
//        boolean isFilter = false;
//
//
//        String method = ((HttpServletRequest) request).getMethod();
//        if (method.equals("OPTIONS")) {
//            rep.setStatus(HttpServletResponse.SC_OK);
//        }else{
//
//
//            if (null == token || token.isEmpty()) {
//                resultInfo.setCode(Constant.UN_AUTHORIZED);
//                resultInfo.setMsg("用户授权认证没有通过!客户端请求参数中无token信息");
//            } else {
//                if (TokenUtil.volidateToken(token)) {
//                    resultInfo.setCode(Constant.SUCCESS);
//                    resultInfo.setMsg("用户授权认证通过!");
//                    isFilter = true;
//                } else {
//                    resultInfo.setCode(Constant.UN_AUTHORIZED);
//                    resultInfo.setMsg("用户授权认证没有通过!客户端请求参数token信息无效");
//                }
//            }
//            if (resultInfo.getCode() == Constant.UN_AUTHORIZED) {// 验证失败
//                PrintWriter writer = null;
//                OutputStreamWriter osw = null;
//                try {
//                    osw = new OutputStreamWriter(response.getOutputStream(),
//                            "UTF-8");
//                    writer = new PrintWriter(osw, true);
//                    String jsonStr = JSON.toJSONString(resultInfo);
//                    writer.write(jsonStr);
//                    writer.flush();
//                    writer.close();
//                    osw.close();
//                } catch (UnsupportedEncodingException e) {
//                    logger.error("过滤器返回信息失败:" + e.getMessage(), e);
//                } catch (IOException e) {
//                    logger.error("过滤器返回信息失败:" + e.getMessage(), e);
//                } finally {
//                    if (null != writer) {
//                        writer.close();
//                    }
//                    if (null != osw) {
//                        osw.close();
//                    }
//                }
//                return;
//            }
//
//            if (isFilter) {
//            logger.info("token filter过滤ok!");
//            chain.doFilter(request, response);
//            }
//        }


    }

    @Override
    public void init(FilterConfig config) throws ServletException {

    }

}
